Often referred to by its initials, TP, "Time Pass" is colloquial slang for any activity whose main objective or result is distraction.
Examples:
as verb: "Are you ever going to study for exams, or will you TP all day?"
as noun: "That new foosball table is good for TP, but won't help you pass exams."
as adj: "The new M. Night Shymalan movie was not scary; it was just TP."